Dimensional Tools require how many RF to fill a dimension. I think the power should at least fill a couple of them.. Do not know.
Or make your base run just on these reserves and try to make a base that is really energy efficent that it can stay as long as possible active.
And every light has to be a luminator so that you have a generall powerloss....
Would be a funny quest mode. You have limited power and you have to get to create a new powersource from IC2/addons to stay alive xD if power turns 0 you are dead. Cables are cheap, lights also. Power Storages are normal costs, and generators of any kind are extremly expensive. Maybe you have 1 generator or something that the person can use or something like that (at the first time)
Recipes for other lights are by the way removed XD. And the death in the dark... Well could make the game play in the deep dark xD
I mean 250.000.000EU are not stayig long (maybe even more power as starting point)..